Adjustable connection for power presses



March 17, 1931. HINDE 1,796,844

ADJUSTABLE; CONNECTION FOR POWER PRESES File'd Jan. 14, 1929 2 Sheets-Sheet l March 17, 1931. H HINDEC 1,796,844 v ADJUSTABLE CONNECTION FOR POWER PRESSES Filed Jan. 14, 1929 2 Sheets-Sheet 2 Patented Mar. 17, 1931 UNETED STATES PATENT OFFICE HENRY JOHN HINDE, OF TOLEDO, OHIO, ASSIGNOR TO THE TOLEDO llAGl-IINE 8: TOOL COMPANY, OF TOLEDO, OHIO, A CORPORATION OE OHIO ADJUSTABLE CONNECTION FOB POWER PRESSES Application filed January 14, 1929'. Serial N0. 332,412

This invention relates to an improved ad- I ustable connection for power presses, punch.

presses and other similar machines, which makes it possible to adjust the slide through '5 an unusually wide range, so that a single machine may be used for a great variety of work,

In machines of this character, as heretofore constructed, the range of adjustment for the slide, as a practical proposition, has been quite limited, due to the fact that if the ad justing screws are made longer and the slide adjusted to its uppermost position, the upper ends of the screws will strike the crank pin.

It .has been hitherto proposed to increase 1 the range of adaptability of. the press, either by using rings or risers beneath the bolster to bring the latter up to the desired level, or by providing screw means for adjusting the bed,

. but this is not always practical since it often makesit necessary to build up the floor level, when the bed is adjusted to its uppermost position.

With the above facts in mind, it is theobject of the present invention to provide an improved adjustable connection, whereby the practical range of adjustment of the slide may be materially increased. In itspresent embodiment, the invention includes a telescoping screw associated with the upperand lower connections in the manner-hereinafter described. It also includes improved means desired position.

The objects and advantages of the invention will be more specifically explained in connection with the accompanying drawings, which illustrate one embodiment thereof, and in which Figure 1 is a front elevation of a portion of a power press with the invention applied thereto.

Fig. 2 is a sectional view, on an enlarged scale, taken on the line 2-2 of Figure 1.

Fig. 3 is a sectional view on the same scale as Figure 1, and taken on the line 3-3 of Figure 1. w a

Fig. 4 is a section taken on the line tl of Fig. 2;

Fig. 5 is. a section taken on the line 5-5 of F1 g. 2. In the form illustrated in the drawings, the invention is associatedwlth a double crank tion, in which a slide 8 is adapted to reciprocate. Each side of theframe is provided with a bearing 9 to receive, one end of the crank shaft 10, and the latter is provided with a driving gear 11 beyond the side of the frame. The shaft 10 is provided with one or more cranks 12 and each crank pin 13 is re ceived in a bearing 14: provided at the upper end of an upper connecting member 15. The member 15 is formed with an internally threaded sleeve to receive a telescoping screw 16. This screw is in the form of a sleeve with 1ts lower portion internally threaded to receive the screw 17, the external and internal threads of the screw 16 being cut in opposite directions so that the travel of the screw 17 will be double that of the screw 16.

The lower end of the screw 17 is formed with a head 18 which fits within a socket 19 formed in the lower connecting member 20. The lower end 21 of the lower connecting member is pivotally connected to the slide 8 to allow for the throw of the crank 12 as the slide is reciprocated. The head 18 is formed with a peripheral flange 22 which is securely bolted to the lower connecting member 20.

The preferred means for driving the screw 16 for adjusting the slide upwardly or downwardly comprises a bevel gear 23 secured to the screw and the latter extends downwardly below the gear 23, where it is formed with a reduced portion 24 rotatably mounted in a bearing 25 at the end of a bracket 26. This bracket also has a bearing for a shaft 27 which has a bevel pinion 28 secured to the end thereof for driving the gear 23. In a double crank press, the bracket 26 and shaft 27 extend from one connection to the other so that both may be. adjusted simultaneously.

The shaft 27 may be driven by any suitable means. In the present instance, a worm gear 29 is secured to the shaft 27 and is driven by a Worm 30 formed on a stub shaft 31 which carries a gear 32 in mesh with a driving pinion f 33 securedto the lower end of a jointed press having a frame" 7 of suitable construcshaft 34, which may be connected to any suitable source of power. 7

It is important that the screw 16 be positively secured in the position to which it is adjusted. For this purpose, the sleeve portion of the upper connecting member 15 is split, as at 35, and may be drawn into clamping relation to the screw by means of bolts36. The :lower end of the screw 16 is split three ways, as shown at 3T, soithat it maybe-securely clamped to the lower screw 17, in whatever circumferential position .the screw 16may be.

The clamping means for the lower end of the the screw 16 in any position to which it is adjusted. VV'hile I have shown the invention as applied to a double crank press, itis obvious that the same is adapted to be used in connection with any other type of press or in any other machine where it is desirablc'to have a connectionof'tlns kind.

be understood that the invention includes ali such modifications as may fall within the scope of the appended claims, in whatever machine the same may be used.

hat I claim is:

1.7In a machine of the .class described, a frame, a slide leciplocable therein, a crank shaft ourna'led in the frame above the slide,

- .an upper connecting member journaled on a crank pinof the shaft, a, lower connecting memberconnected with said slide, a screw having oppositely threaded connections with the upperand lower connecting members respectively, a bracket in which said screw is journaled so that said bracket travels up or down with the screw,an.d means mounted in the bracket for rotating said screw to adj-ust the length of the connection.

2. In a machine of the class described, a

frame, a slide r-eciprocable therein, a crank shaft journaled in the frame above the slide, an upper connecting member journaled on a crank pin of the shaft, a-lower connecting member connected with said slide, a sleeve having oppositely c-u-t internal and external threads .operatively associated with the respective connectingmembers, a bracket in wvhich said sleeve r-otata'by held so that aid racket tra s J 1 do n wi h; the sleeve, and means mounted in the bracket In applying the It is also tofor rotating said sleeve to adjust the length of the connection.

3. In a machine of the class described, a frame, a slide reciprocable therein, a crank shaft journaled in the frame above the slide, an upper connecting member journaled on a crank pin of the shaft, a lower connecting member connected with said slide, a sleeve having oppositelycut internal and external threads operatively associated with the resitely ,cut internal and external threads operatively associated with the respective connecting members, a bracket in whlch said sleeve is held for rotation, said bracket being movable up and down with the sleeve when .the latter is rotated, and means carried by said bracket for rotating said sleeve to vary the distance between the upperand lower connecting members.

5. In a machine of the class described, a frame, a slide reciprocable therein, a crank shaft journaled in the frame, a connection between said crank shaft and said slide including a screw, a bracket having a bearing in which said screw is journaled so that the bracket travels up or down with the screw, means mounted in the bracket for rotating the screw to adjust the length of the connection, and means mounted 011 said bearing for clamping said screw in its adjusted position.

6. In a machine of the class described, an upper connecting member, a lower connecting member, one of said members having a split sleeve internally threaded, a screw having a threaded connection witlisaid split sleeve and having an operative connection with the other connecting member, a reciprocable non-rotatable bracket having a bearing in which said screw is journaled so that the bracket travels with the screw, means for clamping the split sleeve to the screw, and means on said bearing for clamping said screw.

7. In a machine of the class described, an upper connecting member, a lower connecting member, one of said members having an internally threaded split sleeve, a telescoping screw having oppositely cut internal and external threads, said external thread engaging the split sleeve, a screw secured to the other connecting member and engaging said internal threads, a reciprocable non-rotatable member having a bearing in which said telescoping screw is jo-urnaled so that the reciprocating member travels with the telescoping via HENRY JOHN HINDE. 

